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Inessa05 [86]
3 years ago
9

What is the solution of the following system

Mathematics
1 answer:
AleksAgata [21]3 years ago
4 0

Step-by-step explanation:

8x + 14y = 4 ...1

-6x - 7y = -10 ...2

...2 × 2 in 2 sides of the equation

-12x -14y = -20 ...3

...1 + ...3

8x + 14y +(-12x -14y) = 4 +(-20)

8x + 14y - 12x -14y = 4 - 20

-4x = -16

x = (-16)/(-4)

= 4

replace x in ...1 or ...2 you will reserve y value

and answer in the term of (x,y)

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Solve the following system of equations.
Yuri [45]

Answer:

x= 12

y= 10

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2 years ago
a spinner is divided into five equal sections labeled 1 to 5 what is the probability that the spinner will land on 3
Vesna [10]
Since there are 5 possible outcomes and 3 is only one of the outcomes, the probability would be 1/5 or 20%
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3 years ago
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Adrian exercised three days during the past week. He exercised 58 minutes and 45 seconds during the
aniked [119]

Answer:

2h 1' 1"

Step-by-step explanation:

1h = 1 hora

1' = 1 minute

1" = 1 secind

The sum of the three days is:

  58'  45"

+ 40'  40"

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121" = 120" + 1"  = (120/60) + 1 = 2' + 1"

Then:

118' + 121" = 118' + 2' ´+ 1" = 120' + 1"

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(120/60) + 1 = 2h + 1'

then:

118' + 121" = 2h + 1' + 1"

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3 0
1 year ago
F(x) = (x + 1)²<br><br>what is the domain of f? please help​
Elenna [48]
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3 years ago
Create an equivalent expression:<br><br> 2(3x -1) - 3x +4<br><br> Show all steps please! In detail!
Vsevolod [243]

Answer:

The answer is 3x+2

Step-by-step explanation:

2(3x-1)-3x+4

I did distributive property on 2(3x-1) how I did that was I multiplied 2 times 3x which is 6x (2 times 3x=6x). Then I multiplied 2 times -1 which equals -2          (2 times -1=-2).

new expression:

6x-2-3x+4

I combined all the numbers with the variables (6x and -3x) and by subtracting both of them you get 3x (6x-3x=3x). After that you combine -2 and 4 which equals 2 (-2+4=2).

This is now the final expression (your answer):

3x+2

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3 years ago
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